Tympanic membrane structure for connecting rod fan

Abstract

The utility model discloses a tympanic membrane structure for a connecting rod fan, which comprises a tympanic membrane, a circular seal is arranged at the center of the tympanic membrane, and a horizontal limiting structure is arranged at the edge of the circular seal; a sealing pressing plate is assembled on the circular seal, a circular sealing groove is formed in the sealing pressing plate, the circular sealing groove is matched with the circular seal in the center of the tympanic membrane, and a limiting hole for containing the horizontal limiting structure is formed in the circular sealing groove. Through the arrangement of the horizontal limiting structure and the limiting hole which are matched with each other, mutual limiting between the tympanic membrane and the sealing pressing plate is completed, and the situation of air leakage caused by a torsion gap generated between the tympanic membrane and the sealing pressing plate in the working process is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sealing structure field of diaphragm aeration fan, especially a drum membrane structure for connecting rod fan. BACKGROUND

[0002] The diaphragm aeration fan is mainly used in small gas conveying fan, and the application field mainly includes rural sewage treatment, fishery breeding, electronic precision instrument gas supply and the like, the drum membrane and the pressing plate cooperate the connecting rod action when the diaphragm fan needs to be used when blowing, the drum membrane will be inflated and deformed when the connecting rod reciprocates, and the process of inhaling - discharging - inhaling again is formed, but the inhaled air will escape from the gap due to the torsional gap of the pressing plate when the drum membrane deforms, which leads to the occurrence of air leakage phenomenon, and the present application proposes a solution for the problem. SUMMARY

[0003] The utility model discloses a kind of drum membrane structures for connecting rod fan, can avoid the occurrence of air leakage situation caused by relative rotation of drum membrane and pressing plate during working process, torsional gap.

[0004] Technical scheme: the drum membrane structure for connecting rod fan of the utility model, including drum membrane, it is characterized by: the center of the drum membrane is provided with circular seal, the edge of the circular seal is provided with horizontal limiting structure;

[0005] Sealing pressing plate is assembled on the circular seal, circular sealing groove is provided on the sealing pressing plate, and the circular sealing groove is matched with the circular seal in the center of the drum membrane, and limiting hole for accommodating horizontal limiting structure is provided on the circular sealing groove.

[0006] When sealing pressing plate and drum membrane are cooperatively installed, horizontal limiting structure is installed in limiting hole, when torsional gap is generated between drum membrane and sealing pressing plate during working process, limiting hole limits horizontal limiting structure, prevents horizontal limiting structure from rotating, thereby preventing the rotation of drum membrane, and finally avoiding the generation of torsional gap.

[0007] As preferred, the circular seal is nested inside the circular sealing groove and is attached to the circular sealing groove.

[0008] The circular seal is nested in the circular sealing groove, so that the drum membrane is in close contact with the sealing pressing plate when deformed, preventing air leakage.

[0009] As preferred, the horizontal limiting structure includes two semicircular protrusions opposite the edge of the circular seal.

[0010] The structure of the two symmetrically arranged semicircular protrusions can make the torsional force generated by the limiting hole when the drum membrane deforms more evenly distributed, without concentrating on a point, leading to unbalanced overall stress of the structure.

[0011] As preferred, the semicircular protrusion matches with the limiting hole and the outer wall of the semicircular protrusion matches with the inner wall of the limiting hole.

[0012] The matching and matching design of the semicircular protrusion and the limiting hole enables the semicircular protrusion to be in close contact with the limiting hole when the eardrum is inflated, which can prevent air leakage and further improve the limiting effect.

[0013] As preferred, the semicircular protrusion is opposite to the outer side edge of the circular seal and is located at both ends of the horizontal center axis of the circular seal.

[0014] As preferred, the limiting hole is provided with two limiting holes, which are opposite to the outer side edge of the circular seal groove and are located at both ends of the horizontal center axis of the circular seal groove.

[0015] The two limiting holes are provided at both ends of the horizontal center axis of the circular seal groove for matching the two semicircular protrusions.

[0016] As preferred, the outer side edge of the eardrum is opposite to the limiting boss, and the limiting boss is located at both ends of the vertical center axis of the eardrum.

[0017] The limiting boss is provided for limiting the movement of the eardrum in the vertical direction when the eardrum is installed in the fan, preventing the eardrum from moving in the vertical direction during deformation and generating a gap with the sealing pressure plate.

[0018] Advantages: Compared with the prior art, the utility model has the following advantages:

[0019] The utility model discloses the setting of the matching semicircular protrusion and limiting hole completes the mutual limiting between the eardrum and the sealing pressure plate, prevents the eardrum from generating the torsional gap with the sealing pressure plate during the working process, and further limits the position of the eardrum in the fan through the setting of the limiting boss, prevents the eardrum from generating the gap with the sealing pressure plate in the vertical direction in the fan during deformation, and finally improves the efficiency and reliability of the fan. DRAWINGS

[0020] Fig. 1 It is the front view of the eardrum in the utility model.

[0021] Fig. 2 It is the three-dimensional structure schematic view of the eardrum in the utility model.

[0022] Fig. 3 It is the front view of the pressure plate in the utility model.

[0023] Fig. 4 It is the three-dimensional structure schematic view of the pressure plate in the utility model.

[0024] Fig. 5 The utility model discloses a membrane and the assembly view of pressing plate for the utility model.

[0025] Among them: 1, the tympanic membrane, 2, the limit boss, 3, the circular seal, 4, the semicircular convex, 5, the sealing pressing plate, 6, the limit hole, 7, the circular sealing groove. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be further explained below with reference to the drawings.

[0027] Example 1:

[0028] Referring to the drawings Figs. 1-5 The utility model discloses a connecting rod fan's tympanic membrane structure, including tympanic membrane 1 and sealing pressing plate 5, the center of tympanic membrane 1 is provided with circular seal 3, and the edge of circular seal 3 is provided with horizontal limit structure, is provided with the circular sealing groove 7 of mutual matching with circular seal 3 on sealing pressing plate 5, is provided with the limit hole 6 of containing horizontal limit structure on circular sealing groove 7, installs with the cooperation of sealing pressing plate 5 and tympanic membrane 1, installs horizontal limit structure in limit hole 6, when the deformation of tympanic membrane 1 and the torsional gap between sealing pressing plate 5 are produced in the working process, limit hole 6 is limited to horizontal limit structure, prevents horizontal limit structure from rotating, thereby preventing the rotation of tympanic membrane 1, finally avoids the generation of torsional gap.

[0029] In this embodiment, circular seal 3 is nested inside circular sealing groove 7, and is attached to circular sealing groove 7.

[0030] The nesting of circular seal 3 in circular sealing groove 7 allows tympanic membrane 1 to be in close contact with sealing pressing plate 5 when deformed, preventing air leakage.

[0031] In this embodiment, the outer edges of tympanic membrane 1 are oppositely provided with limit bosses 2, which are located at both ends of the vertical central axis of tympanic membrane 1. The limit bosses 2 are provided to limit the movement of tympanic membrane 1 in the vertical direction when it is installed in the fan, preventing displacement of tympanic membrane 1 in the vertical direction during deformation, thereby generating a gap between tympanic membrane 1 and sealing pressing plate 5. The provision of limit bosses 2 further prevents the generation of a gap between tympanic membrane 1 and sealing pressing plate 5, improving the efficiency and reliability of the fan.

[0032] Example 2:

[0033] In this embodiment, the horizontal limit structure includes two semicircular convexes 4 oppositely arranged at the edges of circular seal 3. The structure of the two symmetrically arranged semicircular convexes 4 allows the torsional force generated by limit hole 6 to be more evenly distributed when tympanic membrane 1 deforms, preventing the force from being concentrated at a single point and causing the overall structure to be unbalanced.

[0034] In the embodiment, the semicircular protrusions 4 are arranged at the outer edges of the circular seal 3, at both ends of the horizontal center axis of the circular seal 3.

[0035] In the embodiment, the limiting holes 6 are arranged at the outer edges of the circular seal groove 7, at both ends of the horizontal center axis of the circular seal groove 7, and the structure of the two limiting holes 6 arranged at both ends of the horizontal center axis of the circular seal groove 7 is used to match the arrangement of the two semicircular protrusions 4.

[0036] Embodiment 3:

[0037] In the embodiment, the semicircular protrusions 4 and the limiting holes 6 are matched with each other, and the outer wall of the semicircular protrusion 4 is attached to the inner wall of the limiting hole 6. The matched design of the semicircular protrusion 4 and the limiting hole 6 enables the eardrum 1 to be in close contact between the semicircular protrusion 4 and the limiting hole 6 when the eardrum 1 is inflated, which can prevent air leakage on the one hand and further improve the limiting effect on the other hand.

[0038] The above embodiments only exemplarily illustrate the principle and effect of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A diaphragm structure for a connecting rod blower comprising a diaphragm, characterized by: The center of the eardrum is provided with a circular seal, and the edge of the circular seal is provided with a horizontal limiting structure; A sealing pressing plate is assembled on the circular seal, and a circular sealing groove is arranged on the sealing pressing plate and matched with the circular seal at the center of the eardrum, and a limiting hole accommodating the horizontal limiting structure is arranged on the circular sealing groove.

2. A diaphragm structure for a connecting rod blower as defined in claim 1, characterized by: The circular seal is nested in the circular sealing groove and is attached to the circular sealing groove.

3. A diaphragm structure for a connecting rod blower as defined in claim 1, wherein: The horizontal limiting structure comprises two semicircular protrusions arranged opposite to the edge of the circular seal.

4. A diaphragm structure for a connecting rod blower as defined in claim 3, wherein: The semicircular protrusions are matched with the limiting holes, and the outer wall of the semicircular protrusions is attached to the inner wall of the limiting holes.

5. A diaphragm structure for a connecting rod blower as defined in claim 3, wherein: The semicircular protrusions are arranged opposite to the outer edge of the circular seal and are located at both ends of the horizontal center axis of the circular seal.

6. A diaphragm structure for a connecting rod blower as defined in claim 1, wherein: The limiting holes are arranged in two and are arranged opposite to the outer edge of the circular sealing groove and are located at both ends of the horizontal center axis of the circular sealing groove.

7. A diaphragm structure for a connecting rod blower as defined in claim 1, wherein: The outer edge of the eardrum is arranged opposite to a limiting boss, and the limiting boss is located at both ends of the vertical center axis of the eardrum.

Images